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<div class="header">
  <div class="headertitle"><div class="title">bits.h</div></div>
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<a href="bits_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/*</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment"> * bits.h -- bit vector manipulation</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment"> *</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment"> * Copyright (C) 2010-2011 Olaf Bergmann &lt;bergmann@tzi.org&gt;</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"> *</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"> * This file is part of the CoAP library libcoap. Please see README for terms</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment"> * of use.</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"> */</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span> </div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="preprocessor">#ifndef COAP_BITS_H_</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="preprocessor">#define COAP_BITS_H_</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span> </div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="preprocessor">#include &lt;stdint.h&gt;</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span> </div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><a class="code hl_define" href="libcoap_8h.html#a58b4446dccd0b8c21b3532ef6b77a57d">COAP_STATIC_INLINE</a> <span class="keywordtype">int</span></div>
<div class="foldopen" id="foldopen00032" data-start="{" data-end="}">
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"><a class="line" href="bits_8h.html#a946f02faba6dbf0467c749390c946a2c">   32</a></span><a class="code hl_function" href="bits_8h.html#a946f02faba6dbf0467c749390c946a2c">bits_setb</a>(<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *vec, <span class="keywordtype">size_t</span> size, <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> bit) {</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span>  <span class="keywordflow">if</span> (size &lt;= ((<span class="keywordtype">size_t</span>)bit &gt;&gt; 3))</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span>    <span class="keywordflow">return</span> -1;</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span> </div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span>  *(vec + (bit &gt;&gt; 3)) |= (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>)(1 &lt;&lt; (bit &amp; 0x07));</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span>}</div>
</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span> </div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span><a class="code hl_define" href="libcoap_8h.html#a58b4446dccd0b8c21b3532ef6b77a57d">COAP_STATIC_INLINE</a> <span class="keywordtype">int</span></div>
<div class="foldopen" id="foldopen00052" data-start="{" data-end="}">
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"><a class="line" href="bits_8h.html#a90bd0ca65f01d997c25071f09a7c3e79">   52</a></span><a class="code hl_function" href="bits_8h.html#a90bd0ca65f01d997c25071f09a7c3e79">bits_clrb</a>(<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *vec, <span class="keywordtype">size_t</span> size, <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> bit) {</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span>  <span class="keywordflow">if</span> (size &lt;= ((<span class="keywordtype">size_t</span>)bit &gt;&gt; 3))</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span>    <span class="keywordflow">return</span> -1;</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span> </div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span>  *(vec + (bit &gt;&gt; 3)) &amp;= (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>)(~(1 &lt;&lt; (bit &amp; 0x07)));</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span>}</div>
</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span> </div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span><a class="code hl_define" href="libcoap_8h.html#a58b4446dccd0b8c21b3532ef6b77a57d">COAP_STATIC_INLINE</a> <span class="keywordtype">int</span></div>
<div class="foldopen" id="foldopen00071" data-start="{" data-end="}">
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"><a class="line" href="bits_8h.html#a5933d85a7155fe929d19b0752db38ebf">   71</a></span><a class="code hl_function" href="bits_8h.html#a5933d85a7155fe929d19b0752db38ebf">bits_getb</a>(<span class="keyword">const</span> <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *vec, <span class="keywordtype">size_t</span> size, <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> bit) {</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>  <span class="keywordflow">if</span> (size &lt;= ((<span class="keywordtype">size_t</span>)bit &gt;&gt; 3))</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span>    <span class="keywordflow">return</span> -1;</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span> </div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span>  <span class="keywordflow">return</span> (*(vec + (bit &gt;&gt; 3)) &amp; (1 &lt;&lt; (bit &amp; 0x07))) != 0;</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span>}</div>
</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span> </div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span><span class="preprocessor">#endif </span><span class="comment">/* COAP_BITS_H_ */</span><span class="preprocessor"></span></div>
<div class="ttc" id="abits_8h_html_a5933d85a7155fe929d19b0752db38ebf"><div class="ttname"><a href="bits_8h.html#a5933d85a7155fe929d19b0752db38ebf">bits_getb</a></div><div class="ttdeci">COAP_STATIC_INLINE int bits_getb(const uint8_t *vec, size_t size, uint8_t bit)</div><div class="ttdoc">Gets the status of bit bit from bit-vector vec.</div><div class="ttdef"><b>Definition</b> <a href="bits_8h_source.html#l00071">bits.h:71</a></div></div>
<div class="ttc" id="abits_8h_html_a90bd0ca65f01d997c25071f09a7c3e79"><div class="ttname"><a href="bits_8h.html#a90bd0ca65f01d997c25071f09a7c3e79">bits_clrb</a></div><div class="ttdeci">COAP_STATIC_INLINE int bits_clrb(uint8_t *vec, size_t size, uint8_t bit)</div><div class="ttdoc">Clears the bit bit from bit-vector vec.</div><div class="ttdef"><b>Definition</b> <a href="bits_8h_source.html#l00052">bits.h:52</a></div></div>
<div class="ttc" id="abits_8h_html_a946f02faba6dbf0467c749390c946a2c"><div class="ttname"><a href="bits_8h.html#a946f02faba6dbf0467c749390c946a2c">bits_setb</a></div><div class="ttdeci">COAP_STATIC_INLINE int bits_setb(uint8_t *vec, size_t size, uint8_t bit)</div><div class="ttdoc">Sets the bit bit in bit-vector vec.</div><div class="ttdef"><b>Definition</b> <a href="bits_8h_source.html#l00032">bits.h:32</a></div></div>
<div class="ttc" id="alibcoap_8h_html_a58b4446dccd0b8c21b3532ef6b77a57d"><div class="ttname"><a href="libcoap_8h.html#a58b4446dccd0b8c21b3532ef6b77a57d">COAP_STATIC_INLINE</a></div><div class="ttdeci">#define COAP_STATIC_INLINE</div><div class="ttdef"><b>Definition</b> <a href="libcoap_8h_source.html#l00038">libcoap.h:38</a></div></div>
<div class="ttc" id="authash_8h_html_aba7bc1797add20fe3efdf37ced1182c5"><div class="ttname"><a href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a></div><div class="ttdeci">unsigned char uint8_t</div><div class="ttdef"><b>Definition</b> <a href="uthash_8h_source.html#l00079">uthash.h:79</a></div></div>
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